diff --git a/install.sh b/install.sh
new file mode 100644
index 0000000..99f7227
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,98 @@
+#!/usr/bin/env sh
+# NORA installer — https://getnora.io/install.sh
+# Usage: curl -fsSL https://getnora.io/install.sh | sh
+
+set -e
+
+REPO="getnora-io/nora"
+BINARY="nora"
+INSTALL_DIR="/usr/local/bin"
+
+# ── Detect OS and architecture ──────────────────────────────────────────────
+
+OS="$(uname -s)"
+ARCH="$(uname -m)"
+
+case "$OS" in
+  Linux)  os="linux" ;;
+  Darwin) os="darwin" ;;
+  *)
+    echo "Unsupported OS: $OS"
+    echo "Please download manually: https://github.com/$REPO/releases/latest"
+    exit 1
+    ;;
+esac
+
+case "$ARCH" in
+  x86_64 | amd64) arch="amd64" ;;
+  aarch64 | arm64) arch="arm64" ;;
+  *)
+    echo "Unsupported architecture: $ARCH"
+    echo "Please download manually: https://github.com/$REPO/releases/latest"
+    exit 1
+    ;;
+esac
+
+ASSET="${BINARY}-${os}-${arch}"
+
+# ── Get latest release version ──────────────────────────────────────────────
+
+VERSION="$(curl -fsSL "https://api.github.com/repos/$REPO/releases/latest" \
+  | grep '"tag_name"' \
+  | sed 's/.*"tag_name": *"\([^"]*\)".*/\1/')"
+
+if [ -z "$VERSION" ]; then
+  echo "Failed to get latest version"
+  exit 1
+fi
+
+echo "Installing NORA $VERSION ($os/$arch)..."
+
+# ── Download binary and checksum ────────────────────────────────────────────
+
+BASE_URL="https://github.com/$REPO/releases/download/$VERSION"
+TMP_DIR="$(mktemp -d)"
+trap 'rm -rf "$TMP_DIR"' EXIT
+
+echo "Downloading $ASSET..."
+curl -fsSL "$BASE_URL/$ASSET" -o "$TMP_DIR/$BINARY"
+curl -fsSL "$BASE_URL/$ASSET.sha256" -o "$TMP_DIR/$ASSET.sha256"
+
+# ── Verify checksum ─────────────────────────────────────────────────────────
+
+echo "Verifying checksum..."
+EXPECTED="$(awk '{print $1}' "$TMP_DIR/$ASSET.sha256")"
+ACTUAL="$(sha256sum "$TMP_DIR/$BINARY" | awk '{print $1}')"
+
+if [ "$EXPECTED" != "$ACTUAL" ]; then
+  echo "Checksum mismatch!"
+  echo "  Expected: $EXPECTED"
+  echo "  Actual:   $ACTUAL"
+  exit 1
+fi
+
+echo "Checksum OK"
+
+# ── Install ─────────────────────────────────────────────────────────────────
+
+chmod +x "$TMP_DIR/$BINARY"
+
+if [ -w "$INSTALL_DIR" ]; then
+  mv "$TMP_DIR/$BINARY" "$INSTALL_DIR/$BINARY"
+elif command -v sudo >/dev/null 2>&1; then
+  sudo mv "$TMP_DIR/$BINARY" "$INSTALL_DIR/$BINARY"
+else
+  # Fallback to ~/.local/bin
+  INSTALL_DIR="$HOME/.local/bin"
+  mkdir -p "$INSTALL_DIR"
+  mv "$TMP_DIR/$BINARY" "$INSTALL_DIR/$BINARY"
+  echo "Installed to $INSTALL_DIR/$BINARY"
+  echo "Make sure $INSTALL_DIR is in your PATH"
+fi
+
+# ── Done ────────────────────────────────────────────────────────────────────
+
+echo ""
+echo "NORA $VERSION installed to $INSTALL_DIR/$BINARY"
+echo ""
+nora --version 2>/dev/null || true